MEES 2028: The Commercial Landlord's Complete Guide to EPC Band C (proposed)

The Minimum Energy Efficiency Standards are changing. The proposed 2028 deadline would require all commercially let properties in England and Wales to reach EPC Band C, a significant jump from the current Band E minimum. For portfolio landlords, this is not a distant risk sitting comfortably beyond the planning horizon. It is an active planning requirement that demands attention now. Retrofit programmes take years to scope, finance, and deliver. Planning permissions add further lead time. Supply chains for insulation, glazing, and heating systems are already under pressure from domestic retrofit programmes running in parallel.

This guide covers everything a commercial landlord needs to know: what Band C actually means in practice, how the MEES penalty is calculated under the statutory formula, which property types face the greatest compliance risk, and what practical steps you should be taking today to close the gap.

One critical caveat before we begin: the Band C 2028 target is a proposed regulatory target, subject to legislative confirmation. It has not yet been enacted into law. The existing Band E requirement under The Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015 (SI 2015/962) remains the current legal standard. Prudent landlords are planning for Band C regardless, because waiting for Royal Assent leaves insufficient time to act. Landlords reviewing related obligations such as SECR (Streamlined Energy and Carbon Reporting), PPN 002 social value scoring, and the broader CSRD and Omnibus package should read those alongside this guide, as they form part of the same ESG compliance landscape.

1. What is MEES?

The Minimum Energy Efficiency Standards (MEES) were introduced by The Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015, statutory instrument SI 2015/962. These regulations set a minimum energy performance rating that privately rented properties must meet before they can be lawfully let. The regulations apply to both domestic and non-domestic (commercial) property, though the rules differ between the two categories.

For commercial property, the current MEES requirement is straightforward: any non-domestic property with an EPC rating of F or G cannot be legally let. The prohibition applies both to new leases and, since 1 April 2023, to continuing tenancies. This means that a landlord who granted a lease before MEES came into force cannot simply rely on the existing lease term; if the property is rated F or G, the landlord is in breach of MEES for as long as the tenancy continues.

EPC ratings for commercial property run from A (most efficient) to G (least efficient), based on the building's carbon dioxide emissions per square metre. The rating is produced by a qualified non-domestic energy assessor and is valid for ten years from the date of issue. The assessment considers the building fabric (walls, roof, floor, glazing), the heating and cooling systems, lighting, and hot water provision.

There are exemptions available under the regulations. A landlord may register an exemption on the PRS Exemptions Register if: the property has had all cost-effective improvements made and still does not reach the minimum rating (the "all improvements made" exemption); the required improvements would reduce the property value by more than 5% (the "devaluation" exemption); the tenant or a third party whose consent is required has refused consent for the works (the "consent" exemption); or the improvements are prohibited by legislation, such as listed building or planning restrictions (the "wall insulation" exemption). Each exemption lasts for five years and must be re-registered if the property is still non-compliant at the end of that period.

2. What does the proposed Band C change mean?

The UK Government has proposed tightening the MEES threshold for commercial properties from the current Band E to Band C by 1 April 2028. This is a substantial increase in ambition. Band E requires an EPC score of 39 or above. Band C requires a score of 55 or above. For many commercial properties, particularly older stock, closing that 16-point gap will require significant capital investment in building fabric and services.

It is essential to understand the current legislative status. As of April 2026, the Band C 2028 target is a proposed regulatory change. It was set out in consultation documents published by the Department for Energy Security and Net Zero (DESNZ), building on earlier consultations under BEIS. The Government's stated intention is to raise the minimum standard to Band B by 2030, with Band C as the interim step. However, the amending statutory instrument has not yet been laid before Parliament. Until it receives Parliamentary approval and comes into force, the legal minimum remains Band E under SI 2015/962.

This uncertainty does not justify inaction. The consultation responses showed broad support for the trajectory. The Net Zero Strategy and the Clean Growth Strategy both assume a tightened MEES regime for commercial property. Even if the 2028 date slips by a year, the direction of travel is clear. Landlords who begin planning now will be better positioned than those who wait for the final legislative text.

Commercial landlords should also note that the MEES rules for domestic property follow a separate track. The domestic MEES regulations also currently require Band E, with proposals to raise this to Band C. However, the exemption framework, the penalty regime, and the enforcement bodies differ between domestic and commercial. The domestic rules are enforced by local housing authorities; the commercial rules are enforced by local weights and measures authorities (trading standards). This guide deals exclusively with the commercial (non-domestic) regulations.

The consultation documents also proposed changes to the exemption framework. Under the current rules, a landlord can register an exemption if they have spent up to a cap on improvements and the property still does not reach the minimum. The Government has proposed increasing this spending cap for commercial properties, which would narrow the circumstances in which an exemption is available. The details remain subject to consultation, but landlords should not assume that the current exemption framework will survive the transition to Band C unchanged.

3. How is the MEES penalty calculated?

The MEES penalty for commercial property is set out in regulation 39 of SI 2015/962. It is not a flat fine. It is calculated by reference to the rateable value (RV) of the property, with minimum and maximum caps. The formula distinguishes between short breaches and long breaches.

Short breach (less than 3 months)

If the landlord has been in breach of MEES for less than three months, the penalty is 10% of the rateable value of the property. This is subject to a minimum penalty of £5,000 and a maximum penalty of £50,000.

Long breach (3 months or more)

If the landlord has been in breach of MEES for three months or more, the penalty is 20% of the rateable value of the property. This is subject to a minimum penalty of £10,000 and a maximum penalty of £150,000.

The penalty can be imposed for each breach, that is, for each property that is non-compliant. A portfolio landlord with multiple sub-standard properties faces a separate penalty calculation for each one. The penalties are also potentially repeatable: a compliance notice followed by continued non-compliance can result in further penalties.

Worked examples

To illustrate how the formula works in practice, consider three properties with different rateable values:

Example 1: Rateable value of £50,000

• Short breach (under 3 months): 10% of £50,000 = £5,000. This equals the minimum, so the penalty is £5,000.
• Long breach (3 months or more): 20% of £50,000 = £10,000. This equals the minimum, so the penalty is £10,000.

Example 2: Rateable value of 200,000 GBP

• Short breach (under 3 months): 10% of 200,000 GBP = £20,000. This is between the minimum (£5,000) and maximum (£50,000), so the penalty is £20,000.
• Long breach (3 months or more): 20% of 200,000 GBP = £40,000. This is between the minimum (£10,000) and maximum (£150,000), so the penalty is £40,000.

Example 3: Rateable value of 500,000 GBP

• Short breach (under 3 months): 10% of 500,000 GBP = £50,000. This equals the maximum, so the penalty is £50,000.
• Long breach (3 months or more): 20% of 500,000 GBP = £100,000. This is between the minimum (£10,000) and maximum (£150,000), so the penalty is £100,000.

Note that for high-value properties with rateable values above 750,000 GBP, the long breach penalty would be capped at £150,000 (since 20% of 750,000 = £150,000). Any property with a rateable value above this threshold faces the same maximum penalty regardless of how large the rateable value is.

CrowAgent Ltd, Companies House No. 17076461, never uses a flat penalty figure in its assessments. Every penalty calculation in CrowAgent Core applies the statutory formula from regulation 39 of SI 2015/962, using the actual rateable value of the property as listed on the Valuation Office Agency (VOA) rating list. This ensures that the compliance exposure figure you see is legally accurate, not an estimate or average.

4. Which commercial properties are at greatest risk?

Not all commercial properties face the same level of MEES risk. Certain categories of building are disproportionately likely to fall below Band C, and some face additional barriers to improvement. Understanding which properties in your portfolio are most exposed is the first step in any compliance programme.

Office stock built before 2000

Older office buildings, particularly those constructed in the 1960s through 1990s, frequently have poor thermal performance. Single-glazed or early double-glazed windows, uninsulated cavity walls, and inefficient gas-fired heating systems are common. Many of these buildings sit at Band D or E, compliant today, but non-compliant under the proposed Band C threshold.

Retail units with single-pane glazing

High-street retail units with large single-glazed shopfronts lose significant heat through the glazing. Replacing shopfront glazing can be expensive and may require planning permission, particularly in conservation areas or where the shopfront has heritage significance.

Industrial units with no insulation

Older industrial and warehouse units, particularly those with metal-clad walls and roofs, often have no insulation at all. These buildings can have very low EPC ratings. However, the rateable values of industrial units are often lower than offices, which means the penalty exposure may also be lower, though the cost of retrofit can still be substantial.

Properties with old heating systems

Buildings relying on aged gas boilers, electric storage heaters, or oil-fired systems will score poorly on the heating component of the EPC assessment. Replacing a heating system is one of the most effective ways to improve an EPC rating, but it is also one of the most expensive and disruptive interventions.

Conservation area properties

Properties in conservation areas or listed buildings face additional constraints. External wall insulation, replacement windows, and other fabric improvements may require conservation area consent or listed building consent. In some cases, the works may be refused entirely, which could qualify the landlord for a regulatory exemption, but this must be properly documented and registered.

Properties with split ownership

Buildings where the landlord owns the shell but the tenant controls the fit-out present particular challenges. The landlord may be unable to access the demised premises to carry out improvements without tenant cooperation. Lease provisions governing alterations, reinstatement obligations, and service charge contributions all affect the practical ability to deliver retrofit works.

5. What to do now: a five-step action plan

Regardless of whether the Band C 2028 deadline is confirmed in its current form, the direction of regulatory travel is clear. Commercial landlords who act now will avoid last-minute cost inflation, supply chain bottlenecks, and the risk of penalty exposure. Here is a practical five-step action plan.

Step 1: Obtain the current EPC for every property

Start by assembling the EPC data for your entire commercial portfolio. Every valid EPC is held on the MHCLG (Ministry of Housing, Communities and Local Government) non-domestic EPC register. If any property does not have a valid EPC, commission one immediately. Remember that EPCs are valid for ten years, so some older certificates may have expired. An expired EPC does not exempt you from MEES; it simply means you need a new assessment before you can determine your compliance position.

Step 2: Identify which properties fall below Band C

With your EPC data assembled, identify every property rated D, E, F, or G. These are the properties that will be non-compliant under the proposed Band C threshold. Prioritise them by penalty exposure: calculate the potential MEES penalty for each property using the rateable value formula set out in Section 3 above. This gives you a clear, financially quantified compliance risk for each asset.

Step 3: Commission a retrofit assessment

For each at-risk property, commission a detailed retrofit assessment from a qualified energy consultant or building surveyor. The assessment should identify the specific measures needed to bring the property up to Band C, the estimated cost of each measure, and the expected improvement in EPC score. Common measures include wall and roof insulation, glazing upgrades, LED lighting, heating system replacement, and building management system (BMS) optimisation.

Step 4: Model the cost against penalty exposure

For each property, compare the cost of the retrofit programme against the MEES penalty exposure. In many cases, the cost of improvement will be lower than the cumulative penalty risk, particularly for properties with high rateable values. Factor in the time value of money using a net present value (NPV) calculation, and consider the impact on rental value and capital value. Properties with better EPC ratings command higher rents and attract a wider pool of tenants, particularly corporate occupiers with their own sustainability commitments. Where a portfolio's largest tenants are obligated under SECR or the broader CSRD and Omnibus disclosure framework, EPC Band C alignment may also become a supply-chain expectation.

Step 5: Begin the programme with lead time for planning permissions

Start the retrofit programme as early as possible. Planning permissions for external insulation, glazing replacement, and heating plant can take three to six months. Listed building consent and conservation area consent can take longer. If your programme requires works during a lease break or void period, you need to align the construction programme with the tenancy schedule. Procurement of materials, particularly heat pumps and high-performance glazing, is subject to lead times that have lengthened significantly since 2024. Building in adequate lead time now avoids the premium pricing and limited availability that will inevitably affect landlords who wait until 2027.

6. How CrowAgent Core helps

CrowAgent Core was built to automate the early stages of the MEES compliance process. Instead of spending weeks assembling EPC data, manually calculating penalty exposure, and briefing consultants on each property, you can complete the initial assessment for an entire portfolio in under ten minutes.

Here is how it works. Enter the postcode or address of any commercial property. CrowAgent Core retrieves the current EPC data directly from the MHCLG non-domestic EPC register. It identifies the current EPC band, the numerical score, and the certificate expiry date. It then runs an automated Band C gap analysis: how far is this property from the proposed threshold, and what is the penalty exposure under the regulation 39 formula using the property's actual rateable value?

CrowAgent Core goes further than gap analysis. For each property below Band C, it generates three retrofit scenario costings: a minimum-cost scenario, a mid-range scenario, and a comprehensive scenario, each with estimated EPC score improvement and net present value (NPV) over a ten-year horizon. The costings are based on current market rates for common commercial retrofit measures and are updated quarterly.

Every figure in CrowAgent Core is cited to its statutory source. Penalty calculations reference SI 2015/962 regulation 39. EPC data is sourced from the MHCLG register. Retrofit cost estimates reference published benchmarks. This means you can use the output directly in board papers, investment committee reports, and lender presentations with confidence in the provenance of the numbers.

CrowAgent Core is not a replacement for professional advice. A detailed retrofit specification will still require a qualified energy consultant or building surveyor. But CrowAgent Core gives you the starting point: which properties are at risk, how much is at stake, and what the improvement options look like. It turns a weeks-long data-gathering exercise into a ten-minute automated assessment, so you can focus your professional advisers' time on the properties that need it most.